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Routines |
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Used by the routines at HandleTumbleweed, HandleOutlaw, HandleBystander, HandleBullet and MovePlayerForward.
Moves an object by the signed speeds at HorizontalSpeed and VerticalSpeed.
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Add HorizontalSpeed to the horizontal position.
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| MoveObject | CCE5 | LD A,($A214) | Fetch HorizontalSpeed. | |||||
| CCE8 | CALL SignExtendAToHL | Call SignExtendAToHL. | ||||||
| CCEB | LD C,(IX+$01) | Fetch the horizontal position. | ||||||
| CCEE | LD B,(IX+$02) | |||||||
| CCF1 | ADD HL,BC | Add the speed to it. | ||||||
| CCF2 | LD (IX+$01),L | Set the horizontal position. | ||||||
| CCF5 | LD (IX+$02),H | |||||||
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Add VerticalSpeed to the vertical position.
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| CCF8 | LD A,($A215) | Fetch VerticalSpeed. | ||||||
| CCFB | CALL SignExtendAToHL | Call SignExtendAToHL. | ||||||
| CCFE | LD C,(IX+$03) | Fetch the vertical position. | ||||||
| CD01 | LD B,(IX+$04) | |||||||
| CD04 | ADD HL,BC | Add the speed to it. | ||||||
| CD05 | LD (IX+$03),L | Set the vertical position and return. | ||||||
| CD08 | LD (IX+$04),H | |||||||
| CD0B | RET | |||||||
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View the equivalent code in;
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